Introduction to Radar General Knowledge Quiz | Introduction to Radar General Knowledge Objective Type Questions & Answers

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Questions
21 ‘SAR’ means :
A system aperture radar
B synthetic aperture radar
C similar aperture radar
D synchronizing aperture radar

Answer: similar aperture radar
22 Radome is made of :
A insulator
B conductor
C magnetic material
D semiconductor

Answer: insulator
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23 Phased array radar is used for :
A fast scanning
B non-scanning only
C weather forecasting
D speed trapping

Answer: fast scanning
24 Grating lobes are :
A desirable
B undesirable
C used in point communications
D used in weather forecast radars

Answer: undesirable
25 Correlation is :
A the process of matching two waveforms
B an algorithm
C a matched filter
D the process of integration

Answer: the process of matching two waveforms
26 MST radar is used for :
A remote sensing
B weather forecasting
C fire controlling
D speed trapping

Answer: weather forecasting
27 Radar altimeter is used for measurement of :
A height
B speed
C range
D bearing

Answer: height
28 Cross-range has the units of :
A m
B m^2
C degree
D m/s

Answer: m
29 Most of the weather radars use :
A linear polarization
B circular polarization
C horizontal polarization
D vertical polarization

Answer: circular polarization
30 Radar cross-section is expressed in :
A m
B m^2
C m^3
D watt/m^2

Answer: m^2
31 ECCM is :
A Electronic Counter Counter Measure
B Electronic Communication Counter Meter
C Electrical Counter Communication Measure
D Electrical Communication Critical Measure

Answer: Electronic Counter Counter Measure
32 Fourier transform is :
A invented by Fourier
B used to convert a frequency variable into time domain
C not an operation
D an operation containing integration

Answer: invented by Fourier
33 Pulse compression :
A increases bandwidth
B decreases bandwidth
C increases range resolution
D increases cross-range resolution

Answer: increases bandwidth
34 Clutter is :
A a unwanted echo
B a desired echo
C a target
D a radar beam

Answer: a unwanted echo
35 Matched filter is :
A a low pass-filter
B a high-pass filter
C used to optimize SNR
D used to reduce SNR

Answer: used to optimize SNR
36 The cross-section of chaff is :
A small
B high
C zero
D infinity

Answer: high
37 Ideal value of SNR in dB is :
A ∞
B zero
C – ∞
D 10

Answer: ∞
38 LIDAR means :
A Linear Detection and Ranging
B Light Detection and Ranging
C Linear Detection Radar
D Light Detection Radar

Answer: Light Detection and Ranging
39 Directional coupler is :
A a switch
B an amplifier
C an oscillator
D an active device

Answer: a switch
40 Kalman filter is :
A a low pass filter circuit
B a high pass filter circuit
C an algorithm
D a band filter circuit

Answer: an algorithm

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